Because of reasons

In honor of my physics exam tomorrow, I present to you: Liquid Nitrogen and 1500 pingpong balls.

What a cool 'experiment'; I love blowing stuff up! *G*

Slight weird feeling of 'deja vu' for me though because I spent many a Saturday night during my teenage years attending concerts and dances and generally misbehaving in that very hall. (We are going back a few decades, but it looks just the same).

Good luck in the exam.
My teacher showed us the video because, as much as she loves liquid nitrogen (and she really does), she didn't want to have to clean up so many pingpong balls.

Le sigh. I love physics, but hate exams. Thanks for the good wishes.
That was so awesome--and bizarre in slo-mo!Good luck on the exam tomorrow. :-)